Minott w



, (No Model.)

M. W. SEWALL.

GAGE 000K.

No. 535,123. Patented'MaJr. 5, 1895.

WITNESSES: g INVENTOR; %w.a dmilmzlm. I

ATTORNEY UNITED STATES PATENT OFFicE.

MINOTT W. SEWALL, OF NEW YORK, N. Y.

GAGE-COCK.

SPECIFICATION forming part of Letters Patent NO. 535,123, dated March 5,1.895.

Applioationfiled March 31, 1894:. Serial No. 505,902- (No model.)

To all whom it may concern.-

Be it known that I, MINOTT W. SEWALL, a citizen of the United States,residing in the city, county, and State of New York, have inventedcertain new and usefullmprovements in GageOocks, of which the followingis a specification.

The improvements relate particularly to that, without removing it fromthe cook it can be ground on its seat, all as hereinafter described andclaimed. 7

In the accompanying drawings, Figure 1 represents a top view of a cockembodying the improvements. Fig. 2-,Sl10WS a vertical, longitudinalsection of the same, on line XX of Fig. 1, the lever being shownpartially in section. Fig. 3 represents the cock partly in vertical,longitudinal section, with the lever in two positions, and an instrumentapplied to the valve to grind the same on its seat.

A denotes the body of the cock, which is shown as threaded at a, that itmay be screwed into place, and is furnished with the usual dischargepassages B B. The inner end of the threaded portion a is shown asbeveled, but this feature forms'no part or my invention. The valve 0,which is cylindrical, is located in a chamber D, forming an enlargedextension of the passage B, and has its forward end at beveled to fitthe beveled seat b. At 0' the valve is reduced in diameter so as toproduce a shoulder a, and a transverse pin E passes through the body insuch relation to the shoulder a as to retain the valve in the cock, andprevent the valve from being blown out when the cock is opened.

The lever or handle F is provided with cheek-pieces f that fork the bodyand are pivoted to ears a thereon by a transverse pin g; and the leveris furnished with a lug or nose F which engages the valve when the leverpasses to its normal position, closes the valve and retains it in aclosed position, the weight of the handle being made sufficient for suchpurpose.

The cheek-pieces f are rounded on their ends, and cover the ends of thepin E when the lever is down, as shown in Fig. 2, thereby preventing adisplacement of the pin. The pivotal pin g passes through thecheek-pieces eccentric to their rounded ends, so that, when the lever israised the ends of the pin E will be uncovered and exposed, as shown inFig. 3, thereby allowing the pin to be driven out,

so that the valve can be removed from its chamber, when desired. The ping is located above the valve 0, so as not to prevent a withdrawal of thelatter, and so that, when the lever israised the nose F thereon willswing rearwardly and upwardly outof engagement with the valve, therebyallowing the steam pressure to force the valve back to open the cock,and to enable the valve to be drawn out without disengaging the handlefrom the cock.

To allow the valve to be ground on its seat, the rear end of the valveis furnished with a slot 0', Fig. 2, to receive ascrew-driver G, Fig. 3,or said end of the valve is suitably shaped to receive a wrench or otherturning instrument, by which the valve can be rotated and ground on itsseat, under pressure, without any interference by the lever F, forceenough being applied to overcome the steam pressure during theoperation.

It is obvious that the ends of the cheekpiecesf need not necessarily berounded, but that they may have any suitable form to cover the ends ofthe pin E (if it be not headed, or to cover one end if it be headed)when the lever is in normal position, and to uncover the end, or ends ofthe pin when the lever is raised.

WhatI claim as my invention, and desire to secureby Letters Patent, is-

1. A cock havingavalve; means for retaining the valve in the cock whenthe same is open; and alever which holds the valve closed,

and which covers the said means when in one position and uncovers thesame when in another position, substantially as set forth.

2. A cock having a valve seated therein with that end farthest from itsseat formed to receive an instrument to rotate the valve on its seat;means for retaining the valve in the cook when the same is open; and alever which holds the valve closed and covers said to means when innormal position, and disengages the valve and uncovers said means whenswung, whereby the said means may be removed or the Valve can be rotatedby a turning-instrument, when the lever is in the latter position,substantially as set forth.

MINOTT W. SEWALL.

\Vitnesses:

J. W. LAWSON, T. H. WATSON.

